David P Posted November 13, 2018 Share Posted November 13, 2018 The speedometer signal in this early LS400 A341E Lexus transmission is not compatible with the Supra speedometer. Further details in this thread; http://www.mkivsupra.net/vbb/showthread.php?351116-speedo-issues-after-1uz-conversion This issue can be remedied using a Speedometer Signal Interface such as this; http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=126/category_id=-1/mode=prod/prd126.htm Link to comment Share on other sites More sharing options...
David P Posted November 20, 2018 Author Share Posted November 20, 2018 Should you be considering fitting a V8 1UZ-FE engine and/or transmission into your Supra. Avoid the earliest versions of this engine and transmission, which can be identified by the 50042 ECU and A341E transmission. Much less conversion work is required with the later models, which can be identified by the 50350 ECU and A342E transmission. Link to comment Share on other sites More sharing options...
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